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PHP Data Types

Hello friends, in this tutorial, we will learn about data types in php and it supports 8 different data types, which are classified into 3 main types.

Four scalar types:

  • boolean
  • integer
  • float
  • string

Four compound types:

  • array
  • object
  • callable
  • iterable

two special types:

  • resource
  • NULL

Note :

  • The type of variable is not usually set by the programmer; Instead, it is determined by PHP based on the runtime in which that variable is used.

PHP Example

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<!DOCTYPE html>
<html>
<body>

<?php
  $var_bool = TRUE;   // a boolean
  $var_str  = "foo";  // a string
  $var_str2 = 'foo';  // a string
  $var_int = 12;     // an integer
  $var_float = 12.12;  // a float
  $var_null = null;   // a null
  $var_array = array ("php", "java", "android", "ios");  // a array

  echo gettype($var_bool); // prints out:  boolean
  echo gettype($var_str);  // prints out:  string
?>


</body>
</html>

Output of PHP comment

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30


Note :

  • The type of variable is not usually set by the programmer; Instead, it is determined by PHP based on the runtime in which that variable is used.